What do you suggest if my fasting glucose is 107 and my triglycerides are 296. my doctor mentioned prediabetes, should i worry?

Prediabetes: Yes, impaired fasting glucose is prediabetes. A healthy lifestyle (healthy diet, regular exercise, and if indicated, weight loss) can help prevent progression to diabetes. Your triglycerides (and I bet you have a low HDL) are consistent with metabolic syndrome, a common accompaniment of pre diabetes and type 2 diabetes. Healthy lifestyle, monitor for diabetes, treat high blood pressure & lipids.